🚀 Feature Request: Support RPC (non-fetch) methods in Miniflare's Service Bindings Node.js config

[GregBrimble]

Describe the solution

When defining a Service Binding for Miniflare, I can provide a Node.js implementation of a fetch handler.

It would be great if I could also provide Node.js implementations of RPC methods. Absolutely no idea how you'd do the serialization. I leave that to you 🧠 🍪.

For example:

import { defineWorkersConfig } from "@cloudflare/vitest-pool-workers/config";
import { Request, Response, type Miniflare } from "miniflare";

export default defineWorkersConfig({
	test: {
		poolOptions: {
			workers: {
				wrangler: { configPath: "./wrangler-workers.toml" },
				miniflare: {
					serviceBindings: {
						MY_FETCH_BINDING: (request: Request, instance: Miniflare) => {
							return new Response("Hi");
						},
						MY_RPC_BINDING: class MyRPCBinding {
							constructor(instance: Miniflare) {
								// ...
							}

							fetch(request: Request) {
								return new Response("Hi");
							}
							
							add(a: number, b: number) {
								return a + b;
							}
						}
					},
				},
			},
		},
	},
});